Senior Staff Software Engineer — Space Systems & Microservices

CesiumAstro; Westminster (CO); On-site; USD 184,000 - 225,000; Full time

Benefits offered by this job

Stock options

Health insurance

Dental insurance

Vision insurance

HSA

FSA

Life insurance

Disability insurance

Retirement plans

Job summary

CesiumAstro is seeking a Staff Software Engineer to lead multiple space-centric programs. You will build modern full-stack applications for mission systems, modernize legacy software, and develop distributed, cloud-native services with a focus on security and reliability.

The role requires 12+ years of software leadership, expertise in microservices and DoD/IC programs, and the ability to mentor engineers while collaborating with mission engineers and operators.

Qualifications

• Bachelor's degree in Software Engineering, Computer Engineering, or relevant field.
• 12+ years of relevant software engineering experience.
• Technical leadership across software modernization or distributed systems.
• Experience architecting microservices, APIs, and high-availability systems.
• Experience with space-based or ground mission systems software testing.
• Mentor junior engineers and guide design decisions.
• DoD/IC programs, ATO processes, or DevSecOps on classified systems.
• Proficiency in C++, C#, Rust, Python, or Go.
• SQL/NoSQL database design and integration.
• Experience with cloud services (AWS, Azure, GovCloud).
• GitHub, Jira, Confluence experience.
• U.S. Citizenship and ability to obtain Secret clearance.
• Up to 10% travel.

Responsibilities

• Build modern full-stack applications for space mission systems.
• Integrate and modernize legacy ground and flight software.
• Develop distributed apps using microservices and cloud-native architectures.
• Support on‑orbit and ground system integration, emulation, and validation.
• Implement DevSecOps pipelines and secure software practices.
• Develop modern UI/UX interfaces for operators and analysts.
• Collaborate with space system engineers and operations teams.
• Contribute to a mission-focused engineering culture shaping the product.

Skills

C++

C#

Rust

Python

Go

SQL/NoSQL

AWS/Azure

DevSecOps

Microservices

GitHub/Jira/Confluence

Education

Bachelor's degree in Software Engineering, Computer Engineering, or relevant field

Tools

GitHub

Jira

Confluence

AWS

Azure

GovCloud

Job description

CesiumAstro is seeking a Staff Software Engineer to lead multiple space-centric programs. You will build modern full-stack applications for mission systems, modernize legacy software, and develop distributed, cloud-native services with a focus on security and reliability.

The role requires 12+ years of software leadership, expertise in microservices and DoD/IC programs, and the ability to mentor engineers while collaborating with mission engineers and operators.